1746-NI4 -

Rockwell (Allen-Bradley) 1746-NI4 Analog Input Module — High-Precision Data Acquisition for Industrial Automation

In the world of industrial automation, precision and reliability define the success of any control system. The Rockwell Automation (Allen-Bradley) 1746-NI4 Analog Input Module stands out as one of the most dependable and accurate analog modules designed for the SLC 500 PLC platform. Built with industrial-grade quality, this module ensures stable analog signal processing for a wide variety of automation applications — from process control to environmental monitoring.

Supplied by Wuhan Yuli Automation Technology Co., Ltd., a trusted global automation solutions provider, this product can be found on the company’s official website www.ayingo.com, which offers a complete range of Rockwell Automation PLC modules and accessories.

1. Overview of the Rockwell 1746-NI4 Module

The 1746-NI4 is a four-channel analog input module designed to read and process signals from sensors and transmitters. It converts analog values such as voltage or current into precise digital data that the PLC can use for real-time decision-making and control.

Each channel of the 1746-NI4 can be individually configured to accept ±10V voltage signals or 4–20 mA current signals, making it highly flexible for a range of industrial applications. Whether you’re monitoring temperature, pressure, or flow, this module ensures your system captures accurate and stable readings every time.

Its modular design allows for easy integration with SLC 500 racks, ensuring quick installation and minimal system downtime — a key benefit for industries where continuous operation is essential.

2. Technical Specifications

Feature	Specification
Module Type	Analog Input Module
Channels	4 Differential Inputs
Input Range	±10V or 4–20 mA
Resolution	12 bits
Input Impedance	>1 MΩ (voltage), 250 Ω (current)
Isolation Voltage	750V DC
Conversion Rate	12 ms per channel
Backplane Current Load	85 mA at 5V DC
Operating Temperature	0–60°C
Compatibility	Allen-Bradley SLC 500 System

These specifications demonstrate the Rockwell 1746-NI4 module’s balance of precision, durability, and performance, which makes it suitable for demanding industrial environments.

3. Key Features and Benefits

High Signal Accuracy

With 12-bit resolution, the 1746-NI4 ensures smooth and accurate analog-to-digital conversion. It minimizes signal noise and distortion, delivering clean data for the PLC to process.

Flexible Configuration

Each of the four channels can be individually configured for voltage or current input. This flexibility allows users to connect multiple types of sensors and transmitters to a single module.

Robust Industrial Design

Designed by Rockwell Automation, the module is engineered to withstand harsh industrial environments, including electrical noise, vibration, and temperature variation. Its high reliability reduces the risk of unexpected system failures.

Easy Integration

The 1746-NI4 can be seamlessly installed in any SLC 500 chassis, allowing users to expand or upgrade their existing PLC systems with minimal effort. No complex configuration is required — simply plug and play.

Diagnostic LEDs

Front-panel LED indicators simplify troubleshooting and monitoring. Users can quickly determine the module’s operating status, signal input condition, and communication health.

4. Typical Applications

The Rockwell 1746-NI4 is widely used across multiple industries where analog signal processing is critical. Some of the most common applications include:

Process Automation: Collecting data from temperature, flow, or pressure transmitters in process control systems.
Water and Wastewater Management: Monitoring liquid levels, turbidity, and chemical parameters.
Energy Systems: Measuring current and voltage signals in power generation and distribution systems.
Manufacturing Automation: Recording production data and controlling machinery based on analog feedback.
HVAC and Building Systems: Maintaining stable environmental control for commercial and industrial facilities.

No matter the industry, the 1746-NI4 provides the accuracy and stability required for smooth and efficient operation.

5. Why Choose Wuhan Yuli Automation Technology Co., Ltd.

Wuhan Yuli Automation Technology Co., Ltd. is a professional supplier of industrial automation products, specializing in brands such as Rockwell Automation (Allen-Bradley), Siemens, ABB, and Honeywell. The company offers authentic and reliable automation components, including PLC modules, I/O cards, power supplies, and communication modules.

When purchasing from www.ayingo.com, customers benefit from:

Guaranteed genuine Rockwell Automation products
Competitive prices and fast delivery worldwide
Expert technical support and after-sales service
Comprehensive product catalog for all automation needs

Whether you are performing maintenance, system expansion, or complete project integration, Wuhan Yuli Automation ensures that every product you receive meets international quality and performance standards.

6. Conclusion

The Rockwell (Allen-Bradley) 1746-NI4 Analog Input Module is a trusted solution for engineers seeking precision, durability, and ease of integration. Its high-resolution input capability, flexible configuration, and reliable performance make it an essential component for modern control systems.

By choosing Wuhan Yuli Automation Technology Co., Ltd., you gain not only a superior product but also long-term technical support and partnership. Visit www.ayingo.com today to explore the full range of Rockwell PLC modules and discover automation solutions tailored to your industry’s needs.